<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script>
			window.onload=function(){
				document.getElementById("btn").onclick=function(){
					document.getElementById("dog").style.display='none';
				}
			}
		</script>
	</head>
	<body>
		<input type="button" id="btn" value="点我啊" />
		
		<br /><br /><br />
		<img src="../../lu3.png" id="dog"/>
		
	</body>
</html>
